Nfa 1486 over Nfa 1486 / I40
Wilson County, Tennessee · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa 1486 over Nfa 1486 / I40 in Wilson County, Tennessee, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1962, making it 63 years old at the 2025 inventory.
- It carries about 288 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 31 of the 403 inventoried bridges in Wilson County rated poor (7.7%); 31 (7.7%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2023, on a 24-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (36.16945, -86.11343)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 4 | 4 | Poor condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 320 ft |
| Location | Overhead over I40 |
| NBI structure number | 95I00400047 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Wilson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I40 over Branch | 1965 | 84,731 | Good |
| I40 over Wilson Creek | 1965 | 84,731 | Good |
| I40 over South Fork Creek | 1965 | 84,731 | Good |
| I40 over Stoner Creek | 1965 | 84,056 | Good |
| I40 over Bartons Creek | 1965 | 80,356 | Good |
| I40 over Branch | 2002 | 80,356 | Good |
All bridges nearby: Wilson County, TN bridge conditions · every bridge in Wilson County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.